Family name Rouyer (Rouyer 
) , around the world, is quite a common cognomen. The last name Rouyer is characteristic of Western Europe, particularly France, where it is quite a rare surname, Luxembourg, and Belgium. In absolute terms, it most frequently occurs in France, Belgium, and Ivory Coast. Much less frequently, Rouyer is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Rouyer | Luxembourg, France, United States, Belgium, Ivory Coast |
| clément rouyer DE (b. 1628) |
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marie françois rouyer French general during the Napoleonic Wars, FR (b. 1765) |
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pierre charles rouyer French pharmacist (1769-1831), FR (b. 1769) |
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| franz konrad rouyer (b. 1727) |
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| jean victor rouyer French officer, FR (b. 1756) |
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| françois, firmin rouyer French politician (1760-1834), FR (b. 1760) |
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| jean-pascal rouyer French politician (1761-1819), FR (b. 1761) |
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| charles étienne rouyer FR (b. 1760) |
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camille rouyer French journalist, FR (b. 1855) |
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albert rouyer FR (b. 1857) |
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| françois-hector rouyer French engineer and architect (1822-1898), FR (b. 1822) |
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| eugène rouyer French architect, FR (b. 1827) |
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| jules rouyer (b. 1820) |
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| émile rouyer FR (b. 1838) |
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| pierre-michel rouyer FR (b. 1889) |
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